Transcript Electrical Safety

Electrical Safety
Craig Shurson CSP, ARM
Regional Loss Control Coordinator
Hortica - The Florists Mutual Company
Service Panel
(breaker or fuse box)
• Breakers and fused must be labeled
• All lids and covers must be securely
fastened
• All unused openings must be plugged
• Minimum of 30” wide by 3’ deep clearance
in front of panel
• All ungrounded circuits must be identified
in the panel
Service Panel continued:
• Warning labels must be on panel doors over
250 volts
• Incoming power is always hooked at the top
Electrical System Equipment
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Must be securely fastened
All openings must be in use or plugged
All connections must be secure
Outdoor signs must have a disconnect
All splices must be made in a junction box
Wire
• Braided cloth wire
• THHN enclosed in conduit or PVC
• Romex
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14 gauge - white
12 gauge - yellow
10 gauge - orange
8 & 6 gauge - black
Wire continued
• Standard Romex is only acceptable for
interior, dry location wiring. Can not be run
on surface.
• Outdoor, underground, wet location, and
direct sunlight exposure all require
specialized wire.
• Wire coating will be stamped with rating
Wire continued
• Two wire production lights are only
acceptable in construction with a minimum
of bulbs
• 100 Watt light bulb is roughly equal to 1
amp of power
• Wire resistance increases over distance.
• 15 Amp circuit should not have more than
13 bulbs.
GFCI Circuits and Outlets
• All outlets in wet locations must be GFCI
protected.
• All outlets or extension cords powering
water fountains with pumps over 15 volts
must be GFCI protected
• GFCI protection is mandatory in bathrooms,
kitchens, and on roof connections in the
workplace
GFCI Circuits and Outlets
continued
• GFCI are rated for +or- 5 mA
• Protection can occur at outlet or in panel
Extension Cords
• May not be used as permanent wiring
– Temporary use is less than 90 days
• May not be attached to the building surface
• May not be used to raise or lower
equipment
• May not be under under carpet or in
flooring
Extension Cords
continued
• Must be placed in raceway if run across
traffic area
• May not be buried
• May not have 3rd grounding prong removed
• May not be used outdoors unless rated
• Must not be coiled around metal.
• May not have multiple cords plugged
together
Pendant Wiring and
Flex Cords are NOT
Extension Cords!
Portable Electric Tools and
Equipment
• Tools must be double insulated to use in the
workplace
• All portable electric tools must have data
plate
• No tools or equipment shall be used with
exposed energized parts
• Look for 3rd prong on plugs
Knob and Tube Wiring
Training for Qualified Personnel
• Must have the skills and techniques
necessary to determine the nominal voltage
of exposed live parts
• Know the clearance distances to avoid
exposure
• Knowledge to distinguish live parts from
other parts of the system
Additional Requirements
• Employees and equipment must keep 10’ of
clearance from power lines
• Portable ladders must be nonconductive
• Ungrounded receptacles must be marked as
such
• Service panels may not be installed in
bathrooms